Subject: Re: pciide, DMA, and the alpha...
To: None <email@example.com>
From: None <firstname.lastname@example.org>
Date: 08/11/1999 21:59:53
In message <19990811214148.A10655@rek.tjls.com>, Thor Lancelot Simon writes:
>My pc164 is running pretty much Fine with an IDE disk. In fact, it boots
>from it. No problems so far. The CMD0646 controller onboard the pc164
>doesn't do Ultra-DMA, though -- it doesn't really matter, since the UDMA
>disks step down to the "plain old" DMA modes. Somewhat more CPU
>utilization, and you lose the CRC over the data that UDMA does, but it
>works and it's a lot better than PIO.
So, if I wanted "good" performance, I'd probably put in a newer UDMA
controller, but it might work well enough.
I'm booting from EIDE right now because I don't have exactly-the-right
>You don't "run out of" interrupts on anything with a PCI bus, you can
>share one interrupt between as many devices as you like. Some ancient PC
>hardware can't cope with this (and even some modern Windows device
>drivers can't!) but it's broken.
Oh, okay. I just know that I see too many weird problems on "modern" hardware